My local feed store recommended this too me ( Wazine) ; so I made up a batch one ounce and one gallon of water. (like he said) then after reading it it said that was for 100 chickens. However I left it in their water bowl as I know they will NOT drink all of it and I thought I will take it away in the morning. Is that ok? They will only have the water for about 16 hours and the last 10 hours it will be dark and they are in bed so they should not get over dosed. What do you think? One more thing the bottle also says it should not be given to chickens who give eggs for human consumption. Yes I should have read it more closer and NOT depended on the guys word. I called him back and he said not to worry about it. BUT I am. Should I give it 30 days before eating eggs? Although they are not laying yet.